Google AdSense Forum

For those who use Google Analytics and have it linked with Adsense accounts, are you seeing a huge disparity between the numbers over the last week? Last week I noticed the Analytics numbers were 60-70% of actual Adsense earnings, over the last few days its fallen from maybe 50% to now only about 1/3.

Wondering if these new "faster" Adsense ads are too fast for Analytics to track?

One visitor with a banner blocker blocking AdSense and it's out of synch.

Also, if your site allows caching, AdSense displays in search engine cache pages which are outside the scope of your domain which may/may not show in Analytics even if it gets a page impression, unsure on that one.

I don't expect them to sync exactly, but in the past the numbers have shown roughly the same --- Adsense might say $100 earnings while Analytics only tracked $90 of those earnings for example. Not a big deal. But the discrepancy is now much larger, dropping to Analytics only catching about half the earnings last week and now only about 1/3 over the weekend.

In some ways, it doesn't matter if the overall numbers sync, but if you're interested in checking earnings by page and you know you're only seeing 1/3 of the total earnings, you really have no idea which pages are performing better, because there's no guarantee that the few results you are seeing are even proportional --- I might be seeing all the earnings for one page that actually earned less while seeing none of the earnings for a page that in reality earned more.

Seems they are aware of this bug and are working on fixing it, here's the official message on GA blog:

Users of the AdSense reports inside of Google Analytics may have noticed that there have been discrepancies between the AdSense reports in Google Analytics and AdSense since March 16th. We’re aware of the issue and a fix is being rolled out at this time. The cause of the issue is not related to the new version of Google Analytics.

Update: 3/22/2011 5:15pm PST - A fix for this issue was released early this morning. It will take a few more hours for the fix reach all users. AdSense reports should be working normally after that. Unfortunately, we are not able to reprocess the data that was affected by this issue.